THAT'S THERAPY: Paul and Adele (Gabriel Byrne, Amy Ryan) meet up again in the two-part season finale of “In Treatment” at 9 p.m. on HBO.

SERIES

Ramsay's Best Restaurant: Two Italian restaurants in England battle it out to be chef Gordon Ramsay's favorite in the premiere of this new series (6 and 9 p.m. BBC America).

Glee: In this new holiday-themed episode Artie finds out that Brittany still believes in Santa (8 p.m. Fox).

Inside the Actors Studio: James Franco sits down with host James Lipton (8 p.m. Bravo).

Eureka: A glitch in an electromagnetic shield traps Carter (Colin Ferguson) and the townspeople in Eureka as the holidays approach in a new holiday-themed episode of the science fiction series (9 p.m. Syfy).

Running Wilde: Since Steve and Emmy (Will Arnett, Keri Russell) each think their own lives are more challenging than the other's, they decide to try on each other's shoes in this new episode (9:30 p.m. Fox).

Girls Who Like Boys Who Like Boys: Best friends face coming out and other struggles together in the premiere of this new series. (10 p.m. Sundance). A second new episode follows at 10:30.

Warehouse 13: Myka and Pete (Joanne Kelly, Eddie McClintock) are sent to hunt down a malevolent Santa Claus. Judd Hirsch guest stars in this new episode (10 p.m. Syfy).

WarGames: Matthew Broderick stars as the original teenage hacker who becomes involved in a computer strategy game that he doesn't realize is real and could cause the launch of missiles. Ally Sheedy and Dabney Coleman also star in this 1983 adventure (8 p.m. Cinemax).